Keep the pet sitters consistent. I know it is difficult when people work independently, but it is very frustrating on my end to continuously be passed from sitter to sitter.
Me and my cats get used to a sitter and think we can rely on them only to have them not be available when needed for future visits.
Other than that, every sitter I have had has done a great job.
Cleo was my last sitter who took care of my 2 babies for 7 days, visiting them twice a day and she did an excellent job.
I think one of my cats missed her more than us when we returned.
She even had to purchase some additional food because of miscalculation on my part and she did that with no problem.
Cleo made my vacation time away even easier because I knew our babies were in good hands.